Hey ya'll. I need some help figuring out what I audio system i have and what I can do to make it better. I've been looking at threads and i've been trying to figure out what I have and what I can do

I have a MY 2009 and the only package that my car comes with is the m-sport package so I don't think I have hifi, or top hifi.. Which I assume means i have the normal stereo? Anyway, I don't think I have the super weak stereo that my2010/2011 people have been talking about. I have front tweeters, which makes me think that my car might be hifi?

Anyway, I want to upgrade and I was wondering if people could help me out with what I should go with. I've been looking at in the classifieds for used L7s.

Can someone clarify what stereo I do have, and what best bang for the buck plug and plays i can get?